usn-4724-1
Vulnerability from osv_ubuntu
Published
2021-02-08 12:55
Modified
2026-04-22 07:36
Summary
openldap vulnerabilities
Details

It was discovered that OpenLDAP incorrectly handled Certificate Exact Assertion processing. A remote attacker could possibly use this issue to cause OpenLDAP to crash, resulting in a denial of service. (CVE-2020-36221)

It was discovered that OpenLDAP incorrectly handled saslAuthzTo processing. A remote attacker could use this issue to cause OpenLDAP to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2020-36222, CVE-2020-36224, CVE-2020-36225, CVE-2020-36226)

It was discovered that OpenLDAP incorrectly handled Return Filter control handling. A remote attacker could use this issue to cause OpenLDAP to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2020-36223)

It was discovered that OpenLDAP incorrectly handled certain cancel operations. A remote attacker could possibly use this issue to cause OpenLDAP to crash, resulting in a denial of service. (CVE-2020-36227)

It was discovered that OpenLDAP incorrectly handled Certificate List Extract Assertion processing. A remote attacker could possibly use this issue to cause OpenLDAP to crash, resulting in a denial of service. (CVE-2020-36228)

It was discovered that OpenLDAP incorrectly handled X.509 DN parsing. A remote attacker could possibly use this issue to cause OpenLDAP to crash, resulting in a denial of service. (CVE-2020-36229, CVE-2020-36230)

References
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2020-36221",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-36222",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-36223",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-36224",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-36225",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-36226",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-36227",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-36228",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-36229",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-36230",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:16.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "ldap-utils",
            "binary_version": "2.4.42+dfsg-2ubuntu3.12"
          },
          {
            "binary_name": "libldap-2.4-2",
            "binary_version": "2.4.42+dfsg-2ubuntu3.12"
          },
          {
            "binary_name": "slapd",
            "binary_version": "2.4.42+dfsg-2ubuntu3.12"
          },
          {
            "binary_name": "slapd-smbk5pwd",
            "binary_version": "2.4.42+dfsg-2ubuntu3.12"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "openldap",
        "purl": "pkg:deb/ubuntu/openldap@2.4.42+dfsg-2ubuntu3.12?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.4.42+dfsg-2ubuntu3.12"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.4.41+dfsg-1ubuntu2",
        "2.4.41+dfsg-1ubuntu3",
        "2.4.42+dfsg-2ubuntu1",
        "2.4.42+dfsg-2ubuntu3",
        "2.4.42+dfsg-2ubuntu3.1",
        "2.4.42+dfsg-2ubuntu3.2",
        "2.4.42+dfsg-2ubuntu3.3",
        "2.4.42+dfsg-2ubuntu3.4",
        "2.4.42+dfsg-2ubuntu3.5",
        "2.4.42+dfsg-2ubuntu3.6",
        "2.4.42+dfsg-2ubuntu3.7",
        "2.4.42+dfsg-2ubuntu3.8",
        "2.4.42+dfsg-2ubuntu3.9",
        "2.4.42+dfsg-2ubuntu3.10",
        "2.4.42+dfsg-2ubuntu3.11"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2020-36221",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-36222",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-36223",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-36224",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-36225",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-36226",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-36227",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-36228",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-36229",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-36230",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:18.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "ldap-utils",
            "binary_version": "2.4.45+dfsg-1ubuntu1.9"
          },
          {
            "binary_name": "libldap-2.4-2",
            "binary_version": "2.4.45+dfsg-1ubuntu1.9"
          },
          {
            "binary_name": "libldap-common",
            "binary_version": "2.4.45+dfsg-1ubuntu1.9"
          },
          {
            "binary_name": "slapd",
            "binary_version": "2.4.45+dfsg-1ubuntu1.9"
          },
          {
            "binary_name": "slapd-smbk5pwd",
            "binary_version": "2.4.45+dfsg-1ubuntu1.9"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "openldap",
        "purl": "pkg:deb/ubuntu/openldap@2.4.45+dfsg-1ubuntu1.9?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.4.45+dfsg-1ubuntu1.9"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.4.45+dfsg-1ubuntu1",
        "2.4.45+dfsg-1ubuntu1.1",
        "2.4.45+dfsg-1ubuntu1.2",
        "2.4.45+dfsg-1ubuntu1.3",
        "2.4.45+dfsg-1ubuntu1.4",
        "2.4.45+dfsg-1ubuntu1.5",
        "2.4.45+dfsg-1ubuntu1.6",
        "2.4.45+dfsg-1ubuntu1.7",
        "2.4.45+dfsg-1ubuntu1.8"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2020-36221",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-36222",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-36223",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-36224",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-36225",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-36226",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-36227",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-36228",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-36229",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-36230",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:20.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "ldap-utils",
            "binary_version": "2.4.49+dfsg-2ubuntu1.6"
          },
          {
            "binary_name": "libldap-2.4-2",
            "binary_version": "2.4.49+dfsg-2ubuntu1.6"
          },
          {
            "binary_name": "libldap-common",
            "binary_version": "2.4.49+dfsg-2ubuntu1.6"
          },
          {
            "binary_name": "slapd",
            "binary_version": "2.4.49+dfsg-2ubuntu1.6"
          },
          {
            "binary_name": "slapd-contrib",
            "binary_version": "2.4.49+dfsg-2ubuntu1.6"
          },
          {
            "binary_name": "slapd-smbk5pwd",
            "binary_version": "2.4.49+dfsg-2ubuntu1.6"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "openldap",
        "purl": "pkg:deb/ubuntu/openldap@2.4.49+dfsg-2ubuntu1.6?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.4.49+dfsg-2ubuntu1.6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.4.48+dfsg-1ubuntu1",
        "2.4.48+dfsg-1ubuntu2",
        "2.4.48+dfsg-1ubuntu3",
        "2.4.48+dfsg-1ubuntu4",
        "2.4.49+dfsg-1ubuntu1",
        "2.4.49+dfsg-2ubuntu1",
        "2.4.49+dfsg-2ubuntu1.2",
        "2.4.49+dfsg-2ubuntu1.3",
        "2.4.49+dfsg-2ubuntu1.4",
        "2.4.49+dfsg-2ubuntu1.5"
      ]
    }
  ],
  "aliases": [],
  "details": "It was discovered that OpenLDAP incorrectly handled Certificate Exact\nAssertion processing. A remote attacker could possibly use this issue to\ncause OpenLDAP to crash, resulting in a denial of service. (CVE-2020-36221)\n\nIt was discovered that OpenLDAP incorrectly handled saslAuthzTo processing.\nA remote attacker could use this issue to cause OpenLDAP to crash,\nresulting in a denial of service, or possibly execute arbitrary code.\n(CVE-2020-36222, CVE-2020-36224, CVE-2020-36225, CVE-2020-36226)\n\nIt was discovered that OpenLDAP incorrectly handled Return Filter control\nhandling. A remote attacker could use this issue to cause OpenLDAP to\ncrash, resulting in a denial of service, or possibly execute arbitrary\ncode. (CVE-2020-36223)\n\nIt was discovered that OpenLDAP incorrectly handled certain cancel\noperations. A remote attacker could possibly use this issue to cause\nOpenLDAP to crash, resulting in a denial of service. (CVE-2020-36227)\n\nIt was discovered that OpenLDAP incorrectly handled Certificate List\nExtract Assertion processing. A remote attacker could possibly use this\nissue to cause OpenLDAP to crash, resulting in a denial of service.\n(CVE-2020-36228)\n\nIt was discovered that OpenLDAP incorrectly handled X.509 DN parsing. A\nremote attacker could possibly use this issue to cause OpenLDAP to crash,\nresulting in a denial of service. (CVE-2020-36229, CVE-2020-36230)\n",
  "id": "USN-4724-1",
  "modified": "2026-04-22T07:36:58Z",
  "published": "2021-02-08T12:55:14Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-4724-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-36221"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-36222"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-36223"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-36224"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-36225"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-36226"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-36227"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-36228"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-36229"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-36230"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "openldap vulnerabilities",
  "upstream": [
    "UBUNTU-CVE-2020-36221",
    "UBUNTU-CVE-2020-36222",
    "UBUNTU-CVE-2020-36223",
    "UBUNTU-CVE-2020-36224",
    "UBUNTU-CVE-2020-36225",
    "UBUNTU-CVE-2020-36226",
    "UBUNTU-CVE-2020-36227",
    "UBUNTU-CVE-2020-36228",
    "UBUNTU-CVE-2020-36229",
    "UBUNTU-CVE-2020-36230"
  ]
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.